/* =============================================================================
   考古題解題學習站 — 站台樣式（assets/css/site.css）
   純 CSS、無 CDN、無框架；所有顏色集中在 :root 變數。
   ============================================================================= */
:root{
  --bg:#f5f7fb;
  --ink:#1f2937;
  --ink-soft:#5b6675;
  --ink-mute:#8a94a3;
  --card:#ffffff;
  --line:#e3e8ef;
  --brand:#1f6feb;
  --brand-dark:#12509f;
  --brand-soft:#eaf1fe;
  --ok:#128a5a;
  --ok-soft:#e6f7ef;
  --bad:#c0392b;
  --bad-soft:#fdeceb;
  --warn:#8a6d1f;
  --warn-soft:#fdf6e3;
  --radius:14px;
  --shadow:0 1px 2px rgba(16,24,40,.05),0 8px 24px rgba(16,24,40,.06);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  background:var(--bg);color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang TC","PingFang SC","Hiragino Sans","Noto Sans TC","Microsoft JhengHei",sans-serif;
  font-size:16px;line-height:1.75;-webkit-text-size-adjust:100%;
}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{width:100%;max-width:1040px;margin:0 auto;padding:0 18px}
.loading{color:var(--ink-mute);font-size:15px}
.skip{position:absolute;left:-9999px;top:0;z-index:50;background:#fff;border-radius:0 0 10px 0;padding:8px 13px;font-size:14px}
.skip:focus{left:0}

/* ---------- header ---------- */
.site-header{
  background:#fff;border-bottom:1px solid var(--line);
  position:sticky;top:0;z-index:20;
}
.head-inner{display:flex;align-items:center;gap:14px;flex-wrap:wrap;padding-top:10px;padding-bottom:10px}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);flex:0 0 auto}
.brand:hover{text-decoration:none}
.brand-mark{
  width:34px;height:34px;border-radius:10px;flex:0 0 auto;
  background:linear-gradient(140deg,var(--brand),#4b9bff);color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:16px;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;min-width:0}
.brand-text>span{font-weight:700;font-size:15px;white-space:nowrap}
.brand-text>small{color:var(--ink-mute);font-size:12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:46vw}
.head-nav{display:flex;flex-wrap:wrap;gap:6px;margin-left:auto;min-width:0}
.head-nav a{
  display:inline-block;padding:5px 11px;border-radius:999px;
  font-size:13.5px;color:var(--ink-soft);background:#f2f5f9;white-space:nowrap;
}
.head-nav a:hover{background:var(--brand-soft);color:var(--brand-dark);text-decoration:none}
.head-nav a.on{background:var(--brand);color:#fff}
.head-nav .nav-home{background:transparent;border:1px solid var(--line)}

/* ---------- sections ---------- */
main{padding-top:22px;padding-bottom:36px}
.hero{
  background:linear-gradient(160deg,#ffffff, #eef4ff 70%);
  border:1px solid var(--line);border-radius:var(--radius);
  padding:22px 22px 18px;box-shadow:var(--shadow);margin-bottom:20px;
}
.hero h1{margin:0 0 6px;font-size:26px;line-height:1.35}
.hero p{margin:0;color:var(--ink-soft);font-size:15px}
.hero-stats{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.stat{
  background:#fff;border:1px solid var(--line);border-radius:10px;
  padding:6px 12px;font-size:13.5px;color:var(--ink-soft);
}
.stat b{color:var(--ink);font-size:16px;margin-right:4px}

.panel{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:18px;box-shadow:var(--shadow);margin-bottom:20px;
}
.panel>h2{margin:0 0 8px;font-size:19px}
.panel>h2:only-child{margin-bottom:0}
.hint{color:var(--ink-mute);font-size:13.5px;margin:0 0 12px}

.year-group{margin-bottom:22px}
.year-label{
  display:flex;align-items:center;gap:10px;font-size:17px;
  margin:0 0 12px;padding-bottom:8px;border-bottom:1px solid var(--line);
}
.year-count{
  font-size:12.5px;font-weight:400;color:var(--ink-mute);
  background:#f2f5f9;border-radius:999px;padding:2px 9px;
}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(248px,1fr));gap:14px}

/* ---------- subject card ---------- */
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:16px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:8px;
}
.card-pending{background:#fbfcfe}
.card-top{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.card-top h3{margin:0;font-size:18px}
.badge{font-size:11.5px;border-radius:999px;padding:2px 9px;white-space:nowrap}
.badge-ok{background:var(--ok-soft);color:var(--ok)}
.badge-wait{background:var(--warn-soft);color:var(--warn)}
.card-exam{margin:0;color:var(--ink-soft);font-size:13px}
.chips{display:flex;flex-wrap:wrap;gap:6px;margin:0}
.chip{background:#f2f5f9;color:var(--ink-soft);border-radius:999px;padding:2px 9px;font-size:12px}
.card-foot{display:flex;flex-wrap:wrap;gap:12px;color:var(--ink-soft);font-size:13px}
.card-foot .num{white-space:nowrap}
.bar{height:7px;background:#eef1f6;border-radius:999px;overflow:hidden}
.bar>i{display:block;height:100%;background:linear-gradient(90deg,var(--brand),#62a8ff);width:0}
.go{
  margin-top:auto;display:inline-block;text-align:center;
  background:var(--brand);color:#fff;border-radius:10px;padding:8px 12px;font-size:14px;
}
.go:hover{background:var(--brand-dark);color:#fff;text-decoration:none}
.card-pending .go{background:#eef1f6;color:var(--ink-soft)}

/* ---------- search ---------- */
.search-row{display:flex;gap:10px;flex-wrap:wrap}
.search-row input[type=search],.search-row select,.filter-input{
  font:inherit;font-size:15px;color:var(--ink);
  border:1px solid var(--line);border-radius:10px;padding:9px 12px;background:#fff;
}
.search-row input[type=search]{flex:1 1 260px;min-width:0}
.search-row select{flex:0 0 auto;max-width:100%}
.search-row input:focus,.search-row select:focus,.filter-input:focus{outline:2px solid var(--brand-soft);border-color:var(--brand)}
.search-status{color:var(--ink-mute);font-size:13.5px;margin:10px 0 0}
.res{display:block;padding:12px;border:1px solid var(--line);border-radius:12px;margin-top:10px;color:var(--ink)}
.res:hover{border-color:#bcd4fb;background:#fafcff;text-decoration:none}
.res-head{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:13px}
.res-sub{font-weight:700;color:var(--brand-dark)}
.res-meta{color:var(--ink-mute)}
.res-snip{margin:6px 0 4px;font-size:14px;color:var(--ink-soft);line-height:1.7}
.res-hit{font-size:12.5px;color:var(--ink-mute)}
mark{background:#fff3bf;color:inherit;padding:0 2px;border-radius:3px}

/* ---------- subject page ---------- */
.head-panel h1{margin:0 0 6px;font-size:23px}
.meta{margin:0 0 8px;color:var(--ink-soft);font-size:14px}
.progress-line{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin-top:12px;font-size:13.5px;color:var(--ink-soft)}
.progress-line .bar{flex:1 1 160px;min-width:120px}
.toolbar{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin:14px 0 6px}
.toolbar .filter-input{flex:1 1 220px;min-width:0}
.btn{
  font:inherit;font-size:14px;cursor:pointer;border-radius:10px;
  padding:8px 13px;border:1px solid var(--line);background:#fff;color:var(--ink-soft);
}
.btn:hover{border-color:#bcd4fb;color:var(--brand-dark)}
.btn-primary{background:var(--brand);border-color:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-dark);border-color:var(--brand-dark);color:#fff}

.qlist{list-style:none;margin:8px 0 0;padding:0}
.qrow{
  display:flex;align-items:center;gap:12px;padding:11px 12px;
  border:1px solid var(--line);border-radius:12px;margin-bottom:8px;color:var(--ink);background:#fff;
}
.qrow:hover{border-color:#bcd4fb;background:#fafcff;text-decoration:none}
.qno{
  flex:0 0 auto;width:30px;height:30px;border-radius:9px;background:#f2f5f9;
  display:flex;align-items:center;justify-content:center;font-size:13.5px;font-weight:700;color:var(--ink-soft);
}
.qstem{flex:1 1 auto;min-width:0;font-size:14.5px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.qunit{flex:0 0 auto;font-size:12.5px;color:var(--ink-mute);white-space:nowrap}
.qstate{flex:0 0 auto;font-size:12.5px;border-radius:999px;padding:2px 9px;white-space:nowrap}
.qstate.ok{background:var(--ok-soft);color:var(--ok)}
.qstate.bad{background:var(--bad-soft);color:var(--bad)}
.qstate.none{background:#f2f5f9;color:var(--ink-mute)}

/* ---------- question page ---------- */
.crumbs{font-size:13.5px;color:var(--ink-mute);margin-bottom:12px;display:flex;flex-wrap:wrap;gap:6px}
.crumbs a{color:var(--ink-soft)}
.q-head{display:flex;flex-wrap:wrap;gap:10px;align-items:baseline}
.q-head h1{margin:0;font-size:20px}
.q-meta{display:flex;flex-wrap:wrap;gap:8px;margin:8px 0 14px}
.stem{font-size:17px;line-height:1.95;margin:6px 0 14px}
.stem p{margin:0 0 8px}
.opts{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:9px}
.opt{
  display:flex;gap:11px;align-items:flex-start;width:100%;text-align:left;
  font:inherit;font-size:15.5px;line-height:1.7;color:var(--ink);
  background:#fff;border:1px solid var(--line);border-radius:12px;padding:11px 13px;cursor:pointer;
}
.opt:hover{border-color:#bcd4fb;background:#fafcff}
.opt-key{
  flex:0 0 auto;width:26px;height:26px;border-radius:8px;background:#f2f5f9;
  display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;color:var(--ink-soft);
}
.opt.pick{border-color:#bcd4fb;background:var(--brand-soft)}
.opt.pick .opt-key{background:var(--brand);color:#fff}
.opt.ok{border-color:#a9dfc4;background:var(--ok-soft)}
.opt.ok .opt-key{background:var(--ok);color:#fff}
.opt.bad{border-color:#f2b6b0;background:var(--bad-soft)}
.opt.bad .opt-key{background:var(--bad);color:#fff}
.feedback{margin:14px 0 0;padding:12px 14px;border-radius:12px;font-size:14.5px}
.feedback.ok{background:var(--ok-soft);color:#0d6b46}
.feedback.bad{background:var(--bad-soft);color:#93302a}
.feedback .fb-title{font-weight:700;margin-right:6px}
.actions{display:flex;flex-wrap:wrap;gap:10px;margin:16px 0 0}
.anim-box{margin:18px 0 0}
.anim-box iframe{width:100%;height:62vh;min-height:340px;border:1px solid var(--line);border-radius:12px;background:#fff}
/* 動畫入口（cross 路徑站／練習卷共用；單題頁沿用 .actions 內的按鈕） */
.anim-entry{margin:12px 0 0}
.anim-entry.is-compact{margin-top:0}
.anim-note{margin:0 0 6px;font-size:.8rem;color:var(--ink-mute)}
.anim-actions{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.anim-actions .btn{font-size:.85rem;padding:6px 12px}
.anim-entry .anim-box{margin:12px 0 0}
.anim-entry .anim-box:empty{display:none}
.anim-entry .anim-box iframe{height:52vh;min-height:280px}
/* cross.html 五科學習路徑：把入口做成獨立色塊，確保實際渲染下明顯可見可點 */
.cross-stop .anim-entry{margin-top:10px;padding:10px 12px;border:1px solid var(--brand-soft);border-radius:12px;background:#f7faff}
.cross-stop .anim-entry .anim-actions .btn{font-size:.87rem;padding:7px 15px}
.cross-stop .anim-entry .anim-actions .btn.btn-primary{font-weight:600}
.practice .pq .anim-entry{margin-top:10px;padding-top:10px;border-top:1px dashed var(--line)}
.sol{margin:18px 0 0;border-top:1px dashed var(--line);padding-top:14px;font-size:15.5px;line-height:1.95}
.sol h2{font-size:17px;margin:0 0 10px}
.sol .lead{margin:0 0 10px}
.sol ol,.sol ul{margin:0 0 10px;padding-left:22px}
.sol li{margin:0 0 6px}
.sol code{background:#f2f5f9;border-radius:5px;padding:1px 5px;font-size:14px}
/* 題庫詳解內文可能用到的元素（.lead/.ans/.tip/.eqs/.matrix/.tbl） */
.sol .lead{background:var(--brand-soft);border-left:3px solid var(--brand);border-radius:0 10px 10px 0;padding:9px 13px;color:var(--ink)}
.sol .ans{margin-top:12px;padding:9px 13px;border-radius:10px;background:var(--ok-soft);border:1px solid #a9dfc4;font-weight:700;color:#0d6b46}
.sol .tip{margin-top:10px;padding:9px 13px;border-radius:10px;background:var(--warn-soft);border:1px dashed #dfca8a;color:#6f5716;font-size:14.5px}
.stem .eqs,.stem .matrix,.sol .eqs,.sol .matrix{margin:10px 0}
.eqs{padding:10px 14px;border-left:3px solid var(--brand);background:#f7f9fd;border-radius:0 10px 10px 0}
.eqs div{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:14.5px;line-height:2}
.matrix{padding:10px 14px;border:1px solid var(--line);border-radius:10px;background:#f7f9fd;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:14px;line-height:2;color:var(--ink-soft)}
.tbl{width:100%;border-collapse:collapse;margin:12px 0;font-size:14.5px;display:block;overflow-x:auto}
.tbl th,.tbl td{border:1px solid var(--line);padding:8px 11px;text-align:left;vertical-align:top}
.tbl th{background:#f2f5f9;color:var(--ink);font-weight:600;white-space:nowrap}
.pager{display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;margin-top:22px;border-top:1px solid var(--line);padding-top:14px}
.pager .btn[aria-disabled=true]{opacity:.45;pointer-events:none}
.empty{color:var(--ink-soft);font-size:14.5px}
.empty p{margin:0 0 8px}
.empty code{background:#f2f5f9;border-radius:5px;padding:1px 5px;font-size:13.5px}
.howto ol{margin:0;padding-left:22px;color:var(--ink-soft);font-size:14.5px}
.howto li{margin-bottom:6px}

/* ---------- footer ---------- */
.site-footer{border-top:1px solid var(--line);background:#fff;padding:16px 0 26px;color:var(--ink-mute);font-size:12.5px}
.site-footer p{margin:0 0 5px}
.site-footer p:last-child{margin-bottom:0}

/* ---------- RWD ---------- */
@media (max-width:720px){
  body{font-size:15.5px}
  .head-inner{gap:10px}
  .head-nav{
    width:100%;margin-left:0;flex-wrap:nowrap;overflow-x:auto;
    padding-bottom:4px;-webkit-overflow-scrolling:touch;
  }
  .head-nav::-webkit-scrollbar{height:0}
  .hero{padding:18px}
  .hero h1{font-size:22px}
  .panel{padding:15px}
  .grid{grid-template-columns:1fr}
  .qrow{align-items:flex-start;flex-wrap:wrap}
  .qstem{flex:1 1 100%;order:3;white-space:normal}
  .anim-box iframe{height:56vh;min-height:300px}
  .brand-text>small{max-width:60vw}
}

/* ---------- KaTeX 數學式排版（題幹／選項／詳解） ---------- */
.stem, .opt-txt, .sol { line-height: 1.95; }
.stem .katex, .opt-txt .katex, .sol .katex { font-size: 1.05em; }
.opt-txt .katex { white-space: nowrap; }
.katex-display { overflow-x: auto; overflow-y: hidden; padding: 2px 0; margin: 10px 0; }
.katex-display > .katex { white-space: normal; }

/* ---------- 科目頁頂端：「一科訓練五科」入口列（連到 cross.html） ---------- */
.cross-entry{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 14px;
  margin:0 0 18px;padding:12px 16px;
  border:1px solid #cfe0fb;border-left:4px solid var(--brand);border-radius:12px;
  background:linear-gradient(90deg,var(--brand-soft),#fff 68%);
  box-shadow:var(--shadow);
}
.cross-entry .ce-tag{
  flex:0 0 auto;font-size:.8rem;font-weight:700;color:var(--brand-dark);
  background:#fff;border:1px solid #cfe0fb;border-radius:999px;padding:3px 12px;
}
.cross-entry .ce-txt{flex:1 1 300px;font-size:.9rem;line-height:1.7;color:var(--ink-soft)}
.cross-entry .ce-go{flex:0 0 auto;font-size:.86rem;padding:7px 14px}

/* ---------- 一科訓練五科：跨科串聯／綜合混編／弱科帶動 ---------- */
.cross-hub h2 { margin-bottom: 6px; }
.cross-hub > .hint { margin-bottom: 16px; }
.cross-modes { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 14px; }
.cross-mode { border: 1px solid #e3e6ef; border-radius: 12px; padding: 14px 16px; background: #fff; }
.cross-mode h3 { margin: 0 0 8px; font-size: 1.02rem; display: flex; align-items: center; gap: 8px; }
.cross-mode .mode-no { display: inline-flex; width: 22px; height: 22px; border-radius: 50%; background: #2b6cb0; color: #fff; font-size: .78rem; align-items: center; justify-content: center; }
.cross-mode p { font-size: .9rem; line-height: 1.7; }
.cross-form { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-top: 10px; }
.cross-form label { font-size: .86rem; display: inline-flex; align-items: center; gap: 6px; }
.cross-form select { padding: 5px 8px; border-radius: 8px; border: 1px solid #e3e6ef; }
.cross-hub #practice-host:not(:empty) { margin-top: 20px; }
.subject-cross { margin-bottom: 18px; }
.subject-cross h2 { margin-bottom: 6px; }
.subject-cross .cross-form { margin-top: 10px; }
.subject-cross #sub-practice-host:not(:empty) { margin-top: 20px; }
.cross-list { list-style: none; padding: 0; margin: 8px 0 0; }
.cross-list li { margin: 0 0 8px; border: 1px solid #e3e6ef; border-radius: 10px; padding: 8px 12px; background: #fff; }
.cross-list li:hover { border-color: #bcd4fb; }
.cross-list a { display: flex; flex-wrap: wrap; gap: 8px; align-items: baseline; text-decoration: none; border: 0; border-radius: 0; padding: 0; }
.cross-list li.has-anim { border-color: #cfe0fb; }
.cross-list li.has-anim .anim-entry { margin-top: 8px; padding-top: 8px; border-top: 1px dashed var(--line); }
.cross-list .anim-actions .btn { font-size: .8rem; padding: 4px 10px; }
.cross-sub { font-weight: 600; }
.cross-no { font-size: .84rem; color: #666; }
.cross-why { font-size: .8rem; color: #2b6cb0; }
.cross-tag { font-size: .7rem; margin-left: 8px; padding: 2px 8px; border-radius: 999px; background: #edf2ff; color: #2b6cb0; vertical-align: middle; }
.cross-host { margin-top: 22px; border-top: 1px dashed #e3e6ef; padding-top: 14px; }
.cross-host h2 { font-size: 1.05rem; }
.practice-head { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 6px; }
.practice .pq { border: 1px solid #e3e6ef; border-radius: 12px; padding: 14px 16px; margin-top: 14px; }
.pq-head { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 8px; font-size: .88rem; }
.pq-no { display: inline-flex; width: 24px; height: 24px; border-radius: 50%; background: #edf2ff; color: #2b6cb0; align-items: center; justify-content: center; font-weight: 600; }
.pq-sub { font-weight: 600; }
.pq-link { margin-left: auto; font-size: .82rem; }
.pq-fb:empty, .pq-sol:empty { display: none; }
.practice-foot { margin-top: 16px; }
@media (max-width: 720px) { .cross-modes { grid-template-columns: 1fr; } }

/* ---------- 一科訓練五科：跨科學習單元（assets/js/data/cross.js） ---------- */
.unit-h1 { margin: 0 0 8px; font-size: 1.4rem; }
.unit-head h2 { margin: 0 0 6px; font-size: 1.24rem; }
.unit-intro { font-size: .95rem; line-height: 1.9; margin: 12px 0 14px; }
.unit-key { background: #f2f7ff; border-left: 3px solid #2b6cb0; border-radius: 0 10px 10px 0; padding: 10px 14px; font-size: .9rem; line-height: 1.8; }
.unit-key b { display: inline-block; margin-right: 8px; color: #2b6cb0; }
.unit-h3 { font-size: 1rem; margin: 20px 0 10px; }
.cross-units a { flex-direction: column; align-items: flex-start; gap: 4px; }
.cross-unit-path { font-size: .82rem; color: #666; }
.cross-path { list-style: none; padding: 0; margin: 0; }
.cross-stop { border: 1px solid #e3e6ef; border-radius: 12px; padding: 13px 15px; margin-bottom: 10px; background: #fff; }
.cross-stop.is-start { border-color: #2b6cb0; background: #fbfdff; }
.stop-head { display: flex; flex-wrap: wrap; gap: 9px; align-items: center; }
.stop-no { display: inline-flex; width: 24px; height: 24px; border-radius: 50%; background: #edf2ff; color: #2b6cb0; align-items: center; justify-content: center; font-size: .8rem; font-weight: 600; }
.stop-sub { font-weight: 600; }
.stop-link { margin-left: auto; font-size: .82rem; }
.stop-point, .stop-why, .stop-next { margin: 9px 0 0; font-size: .92rem; line-height: 1.85; }
.stop-point b { display: inline-block; margin-right: 8px; font-size: .74rem; color: #2b6cb0; background: #edf2ff; border-radius: 999px; padding: 1px 9px; }
.stop-why { color: #555; }
.stop-next { font-size: .88rem; color: #2b6cb0; background: #f2f7ff; border-radius: 10px; padding: 8px 12px; }
@media (max-width: 720px) { .stop-link { margin-left: 0; } .unit-h1 { font-size: 1.2rem; } }

/* ==== 單元觀點動畫（cross.html 單元標題下方直接嵌入，預設可見；由 manifest 驅動） ==== */
.unit-anim{margin:16px 0 4px;border:1px solid var(--line);border-radius:var(--radius);background:#0a1024;overflow:hidden;box-shadow:var(--shadow)}
.unit-anim .anim-head{display:flex;flex-wrap:wrap;align-items:center;gap:10px;padding:11px 14px;background:linear-gradient(180deg,#101a34,#0b1226);border-bottom:1px solid #223055}
.unit-anim .anim-title{color:#ffd166;font-size:.95rem;letter-spacing:.5px}
.unit-anim .anim-meta{color:#93a1c8;font-size:.82rem}
.unit-anim .anim-open{margin-left:auto;color:#cfe0ff;font-size:.82rem;text-decoration:none;border:1px solid #33436f;border-radius:999px;padding:4px 12px}
.unit-anim .anim-open:hover{border-color:#66d9ef;color:#fff}
.unit-anim .anim-stops{padding:8px 14px;color:#a8b8dd;font-size:.82rem;background:#0c1428;border-bottom:1px solid #1b2748}
.unit-anim .anim-stops b{color:#66d9ef;margin-right:8px;font-weight:600}
.unit-anim .anim-frame{position:relative;width:100%;padding-top:56.25%}
.unit-anim .anim-frame iframe{position:absolute;left:0;top:0;width:100%;height:100%;border:0;display:block;background:#070a14}
.unit-anim .anim-note{margin:0;padding:9px 14px;color:#8ea0c8;font-size:.8rem;background:#0c1428}
.unit-anim .anim-missing{margin:0;padding:14px;color:var(--ink-soft);font-size:.86rem;background:#fff}

/* ==== 首頁「一科練五科」區塊的觀點動畫入口（與 cross.html 共用同一套播放器） ==== */
.hub-anim { margin-top: 22px; border-top: 1px dashed #e3e6ef; padding-top: 14px; }
.hub-anim .unit-h3 { display: flex; align-items: center; gap: 8px; margin-top: 0; }
.hub-anim-tabs { display: flex; flex-wrap: wrap; gap: 8px; margin: 10px 0 2px; }
.hub-anim .hub-tab { font: inherit; cursor: pointer; display: inline-flex; align-items: baseline; gap: 8px;
  padding: 6px 14px; border-radius: 999px; border: 1px solid #d7dcea; background: #fff; color: #2b3555; transition: .2s; }
.hub-anim .hub-tab:hover { border-color: #2b6cb0; }
.hub-anim .hub-tab.on { color: #fff; border-color: #ffd166; background: linear-gradient(180deg, #2a3a68, #1b2748); }
.hub-anim .hub-tab-t { font-size: .9rem; font-weight: 600; }
.hub-anim .hub-tab-n { font-size: .76rem; color: #93a1c8; }
.hub-anim .hub-tab.on .hub-tab-n { color: #ffd166; }
.cross-units li { display: flex; align-items: center; gap: 10px; }
.cross-units li > a { flex: 1; }
.cross-units .hub-anim-go { font: inherit; font-size: .78rem; cursor: pointer; white-space: nowrap;
  padding: 4px 12px; border-radius: 999px; border: 1px solid #33436f; background: #111a33; color: #cfe0ff; }
.cross-units .hub-anim-go:hover { border-color: #66d9ef; color: #fff; }
@media (max-width: 720px) { .cross-units li { flex-direction: column; align-items: flex-start; } }

/* =============================================================================
   學習資源與時事專區（OCW／2026 諾貝爾獎時事）
   資料：assets/js/data/resources.js、assets/anim/news/*
   僅為閱讀與連結區塊，不涉及任何題目的答案、選項與作答判定樣式。
   ============================================================================= */
.head-nav a.nav-ocw { background: #fff4d6; color: #8a6d1f; }
.head-nav a.nav-ocw:hover { background: #ffe9b0; color: #6b5316; }
.ocw-hub > h2 { margin: 0 0 8px; font-size: 1.24rem; }
.ocw-news { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; margin: 14px 0 6px; }
.news-card { border: 1px solid var(--line); border-left: 4px solid var(--brand); border-radius: 12px; background: #fff; padding: 14px 16px; }
.news-card.med { border-left-color: #2f855a; }
.news-card.phys { border-left-color: #2b6cb0; }
.news-head { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-bottom: 6px; }
.news-award { font-size: .76rem; font-weight: 700; color: #2b6cb0; background: #edf2ff; border-radius: 999px; padding: 2px 10px; }
.news-card.med .news-award { color: #22543d; background: #e6f7ef; }
.news-date { font-size: .76rem; color: var(--ink-mute); }
.news-title { margin: 4px 0 6px; font-size: 1rem; line-height: 1.6; }
.news-people { margin: 0 0 8px; font-size: .8rem; color: var(--ink-mute); }
.news-oneliner { margin: 0 0 10px; font-size: .92rem; line-height: 1.85; color: var(--ink-soft); }
.news-block { margin: 0 0 10px; }
.news-block b { display: inline-block; margin-bottom: 3px; font-size: .78rem; color: #2b6cb0; background: #f2f7ff; border-radius: 999px; padding: 1px 9px; }
.news-block p { margin: 4px 0 0; font-size: .9rem; line-height: 1.9; }
.news-kws { display: flex; flex-wrap: wrap; gap: 6px; margin: 8px 0; }
.news-kw { font-size: .74rem; color: var(--ink-soft); background: #f2f5f9; border-radius: 999px; padding: 2px 9px; }
.news-unit { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; font-size: .84rem; margin: 8px 0 4px; }
.news-unit b { font-size: .76rem; color: var(--ink-mute); font-weight: 600; }
.news-mini { font-size: .76rem; border: 1px solid #d7dcea; border-radius: 999px; padding: 2px 10px; }
.news-srcs { margin-top: 8px; font-size: .82rem; }
.news-srcs summary { cursor: pointer; color: #2b6cb0; }
.news-srcs ul { margin: 6px 0 0 18px; padding: 0; }
.news-srcs li { margin-bottom: 3px; }
.news-src-from { margin-left: 8px; font-size: .74rem; color: var(--ink-mute); }
.ocw-units { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.ocw-unit { border: 1px solid var(--line); border-radius: 12px; background: #fff; padding: 12px 14px; }
.ocw-unit h4 { margin: 0 0 6px; font-size: .95rem; }
.ocw-unit-news { margin: 0 0 8px; font-size: .82rem; color: var(--ink-soft); line-height: 1.8; }
.ocw-tag { display: inline-block; margin-right: 6px; font-size: .72rem; color: #8a6d1f; background: var(--warn-soft); border-radius: 999px; padding: 1px 8px; }
.ocw-unit-anchors { margin: 0; display: flex; flex-wrap: wrap; gap: 6px; align-items: center; font-size: .8rem; }
.ocw-unit-anchors b { font-size: .74rem; color: var(--ink-mute); font-weight: 600; }
.ocw-anchor { border: 1px solid #d7dcea; border-radius: 999px; padding: 2px 10px; font-size: .78rem; }
.ocw-grp { margin-bottom: 12px; }
.ocw-grp h4 { margin: 0 0 6px; font-size: .92rem; color: #2b6cb0; }
.ocw-links { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 6px 18px; }
.ocw-links li { display: flex; flex-wrap: wrap; gap: 8px; align-items: baseline; }
.ocw-note { font-size: .78rem; color: var(--ink-mute); }
.ocw-foot { margin-top: 14px; border-top: 1px dashed var(--line); padding-top: 12px; }
.ocw-cta { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin: 6px 0 0; }

/* 單題頁的時事提示（純閱讀提示，與作答判定無關；此容器為空時自動移除） */
.news-host:empty { display: none; }
.news-mini-card { border: 1px solid var(--line); border-left: 3px solid #8a6d1f; border-radius: 0 12px 12px 0; background: #fffdf6; padding: 12px 14px; margin: 10px 0; }
.news-body { margin: 6px 0; font-size: .9rem; line-height: 1.9; color: var(--ink-soft); }
.news-anchor-why { margin: 6px 0; font-size: .9rem; line-height: 1.9; background: #f7f9ff; border-radius: 10px; padding: 8px 12px; }
.news-anchor-why b { display: inline-block; margin-right: 8px; font-size: .76rem; color: #2b6cb0; }
.news-mini-links { display: flex; flex-wrap: wrap; gap: 14px; margin: 8px 0 0; font-size: .84rem; }

/* cross.html 單元頁的「時事篇」 */
.unit-news { margin: 6px 0 4px; }
.unit-news-cards { list-style: none; padding: 0; margin: 12px 0 0; }
.unit-news-cards li { border: 1px solid var(--line); border-radius: 12px; background: #fff; padding: 12px 14px; margin-bottom: 10px; }
.unit-news-lens { margin: 4px 0 6px; font-size: .92rem; line-height: 1.85; color: #2b6cb0; }
.unit-news-body { margin: 0 0 8px; font-size: .9rem; line-height: 1.9; color: var(--ink-soft); }
.unit-news-anchors { margin: 0; display: flex; flex-wrap: wrap; gap: 6px; }
.unit-news-anchors a { font-size: .78rem; border: 1px solid #d7dcea; border-radius: 999px; padding: 2px 10px; }
@media (max-width: 720px) {
  .ocw-news, .ocw-units, .ocw-links { grid-template-columns: 1fr; }
}

/* =============================================================================
   安靜精讀版（quiet mode）
   -----------------------------------------------------------------------------
   對應學習者回報的五個障礙：
     1. 太花      → 白底、單一主色、無漸層、無動畫、無語音、無自動播放
     2. 太快太跳  → 卡片與步驟由使用者按鈕決定何時出現（隱藏卡片用 .q-locked）
     3. 版面亂    → 單欄、字級 17.5px、行高 2、卡片之間留白
     4. 沒有步驟  → 固定 ①讀題 ②關鍵想法 ③逐步解 ④對答案 ⑤記題型
     5. 太發散    → 精讀頁不掛時事／跨科延伸，只留題型與考場提醒
   單題頁（site.js renderQuietPanel）與整卷頁（assets/anim/<id>/*_quiet.html）共用這一組樣式。
   ============================================================================= */
.quiet { color: #20262e; }

.quiet .q-progressline { font-size: 14.5px; line-height: 1.9; color: #5c6673; margin: 0 0 8px; }
.quiet .q-order { background: #f6f8fb; border: 1px solid #e6e9ee; border-radius: 10px; padding: 10px 14px; font-size: 15px; line-height: 2; color: #3b4450; margin: 0 0 18px; }
.quiet .q-card { background: #fff; border: 1px solid #e6e9ee; border-radius: 12px; padding: 20px 22px; margin: 0 0 16px; }
.quiet .q-card.q-locked { display: none; }
.quiet .q-card h3 { font-size: 17px; font-weight: 700; margin: 0 0 12px; display: flex; align-items: center; gap: 8px; }
.quiet .q-num { display: inline-flex; flex: 0 0 26px; width: 26px; height: 26px; align-items: center; justify-content: center; border-radius: 50%; background: #f6f8fb; border: 1px solid #e6e9ee; font-size: 15px; color: #1b5fd0; }
.quiet .q-hintline { font-size: 15px; line-height: 1.95; color: #5c6673; margin: 0 0 14px; }
.quiet .q-stem { font-size: 19px; line-height: 2.05; margin: 0 0 16px; }
.quiet .q-stem p { margin: 0 0 10px; }
.quiet .q-opts { list-style: none; padding: 0; margin: 0; }
.quiet .q-opts > li { margin: 0 0 10px; }
.quiet .q-opt { display: flex; gap: 12px; width: 100%; text-align: left; background: #fff; border: 1px solid #e6e9ee; border-radius: 10px; padding: 12px 14px; font-size: 17.5px; line-height: 1.9; color: inherit; cursor: pointer; font-family: inherit; }
.quiet .q-opt:hover { border-color: #c6d2e6; }
.quiet .q-opt.ok { border-color: #63b183; background: #eef8f2; }
.quiet .q-opt.bad { border-color: #dfa5a5; background: #fdf3f3; }
.quiet .q-opt-key { flex: 0 0 22px; font-weight: 700; color: #5c6673; }
.quiet .q-opt-txt { flex: 1 1 auto; min-width: 0; }
.quiet .q-fb { font-size: 16px; line-height: 1.95; margin: 12px 0 0; }
.quiet .q-fb.ok { color: #2f7d55; }
.quiet .q-fb.bad { color: #a4453f; }
.quiet .q-body { font-size: 17.5px; line-height: 2; }
.quiet .q-body p { margin: 0 0 12px; }
.quiet .q-body ul, .quiet .q-body ol { margin: 0 0 12px; padding-left: 1.5em; }
.quiet .q-body li { margin: 0 0 8px; }
.quiet .q-body table { border-collapse: collapse; width: 100%; margin: 0 0 12px; font-size: 16px; }
.quiet .q-body th, .quiet .q-body td { border: 1px solid #e6e9ee; padding: 8px 10px; text-align: left; vertical-align: top; line-height: 1.9; }
.quiet .q-body .eqs, .quiet .q-body div.eqs { font-size: 16.5px; line-height: 2.1; background: #f6f8fb; border-radius: 10px; padding: 10px 14px; margin: 0 0 12px; }
.quiet .q-step { border-left: 3px solid #dfe5ee; padding: 2px 0 2px 16px; margin: 0 0 18px; }
.quiet .q-step:last-child { margin-bottom: 0; }
.quiet .q-step h4 { font-size: 15.5px; font-weight: 700; color: #1b5fd0; margin: 0 0 8px; }
.quiet .q-next { margin-top: 14px; }
.quiet .q-yoursline { font-size: 16px; line-height: 1.95; color: #3b4450; margin: 12px 0 0; }
.quiet .q-typebox { background: #f6f8fb; }
.quiet .q-typemt { width: 100%; border-collapse: collapse; font-size: 16.5px; margin: 0 0 10px; }
.quiet .q-typemt th { width: 118px; text-align: left; font-weight: 700; color: #5c6673; vertical-align: top; padding: 10px 10px 10px 0; border-bottom: 1px solid #e6e9ee; line-height: 1.9; }
.quiet .q-typemt td { padding: 10px 0; border-bottom: 1px solid #e6e9ee; line-height: 1.9; }
.quiet .q-typemt tr:last-child th, .quiet .q-typemt tr:last-child td { border-bottom: 0; }
.quiet .q-pager { display: flex; justify-content: space-between; gap: 12px; margin: 22px 0 0; }
.quiet .q-backline { font-size: 15px; line-height: 1.95; color: #5c6673; margin: 18px 0 0; }

/* 科目頁的「安靜精讀版怎麼用」說明卡 */
.q-howto h2 { margin: 0 0 10px; }
.q-howto p { font-size: 17px; line-height: 2; color: #3b4450; margin: 0 0 12px; }
.q-howto-list { font-size: 17.5px; line-height: 2.05; padding-left: 1.5em; margin: 0 0 16px; }
.q-howto-list li { margin: 0 0 10px; }
.q-howto-actions { display: flex; flex-wrap: wrap; gap: 10px; }

/* 安靜精讀版科目的題目清單：字大、題幹可換行、行距寬，一列讀完再看下一列 */
.quiet-list .toolbar .filter-input { font-size: 17px; }
.quiet-list .qlist .qrow { align-items: flex-start; padding: 14px 16px; font-size: 17px; }
.quiet-list .qlist .qno { font-size: 16.5px; }
.quiet-list .qlist .qstem { font-size: 17px; line-height: 1.95; white-space: normal; overflow: visible; text-overflow: clip; }
.quiet-list .qlist .qunit { font-size: 14px; }
.quiet-list .qlist .qstate { font-size: 13.5px; }
@media (max-width: 720px) {
  .quiet .q-card { padding: 16px 16px; }
  .quiet .q-stem { font-size: 18px; }
  .quiet .q-typemt th { width: 92px; }
}

/* ===== 2026 大事：領域色票 ===== */
.news-card.chem { border-left-color: #6b46c1; }
.news-card.sport { border-left-color: #c05621; }
.news-card.astro { border-left-color: #4c51bf; }
.news-card.climate { border-left-color: #0f766e; }
.news-card.ai { border-left-color: #1a365d; }
.news-card.tw { border-left-color: #97266d; }
.news-card.chem .news-award { color: #553c9a; background: #f3e8ff; }
.news-card.sport .news-award { color: #9c4221; background: #feebc8; }
.news-card.astro .news-award { color: #3730a3; background: #e0e7ff; }
.news-card.climate .news-award { color: #115e59; background: #ccfbf1; }
.news-card.ai .news-award { color: #1a365d; background: #ebf8ff; }
.news-card.tw .news-award { color: #702459; background: #fdeaf3; }

/* ===== 2026 大事一覽 ===== */
.ocw-events { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; margin: 14px 0 6px; }
.news-srcs a { overflow-wrap: anywhere; word-break: break-word; }

/* ===== 五科對照點 ===== */
.ev-points { margin-top: 14px; }
.ev-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 14px; margin: 12px 0 4px; }
.ev-card { border: 1px solid var(--line); border-left: 4px solid var(--brand); border-radius: 12px; background: #fff; padding: 14px 16px; }
.ev-card.med { border-left-color: #2f855a; }
.ev-card.phys { border-left-color: #2b6cb0; }
.ev-card.chem { border-left-color: #6b46c1; }
.ev-card.sport { border-left-color: #c05621; }
.ev-card.astro { border-left-color: #4c51bf; }
.ev-card.climate { border-left-color: #0f766e; }
.ev-card.ai { border-left-color: #1a365d; }
.ev-card.tw { border-left-color: #97266d; }
.ev-sub { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-bottom: 6px; }
.ev-badge { font-size: .74rem; font-weight: 700; color: #2b6cb0; background: #edf2ff; border-radius: 999px; padding: 2px 10px; }
.ev-q { font-size: .76rem; color: var(--ink-mute); }
.ev-title { margin: 4px 0 6px; font-size: 1rem; line-height: 1.6; }
.ev-news-ref { margin: 0 0 10px; font-size: .82rem; color: var(--ink-mute); }
.ev-news-links { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin: 4px 0 0; }
.ev-news-ref b, .ev-block-head b { font-size: .74rem; color: #2b6cb0; background: #f2f7ff; border-radius: 999px; padding: 1px 9px; }
.ev-block { margin: 0 0 10px; }
.ev-block-head { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-bottom: 3px; }
.ev-block p { margin: 4px 0 0; font-size: .9rem; line-height: 1.9; }
.ev-links { display: flex; flex-wrap: wrap; gap: 8px; margin: 8px 0 0; }
/* ===== 2026 大事專區頁（events.html）：領域篩選、逐段朗讀 ===== */
.ev-hero { margin-bottom: 14px; }
.ev-hero h2 { margin-top: 0; }
.ev-hero-links { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.ocw-cta-main { margin: 10px 0 4px; }
.ev-filters { display: flex; flex-wrap: wrap; gap: 8px; margin: 8px 0 10px; }
.ev-chip { display: inline-flex; align-items: center; gap: 6px; font: inherit; font-size: .86rem;
  color: #1a365d; background: #fff; border: 1px solid #cfd8e8; border-radius: 999px; padding: 6px 14px; cursor: pointer; }
.ev-chip:hover { background: #f2f7ff; }
.ev-chip.on { background: #1a365d; border-color: #1a365d; color: #fff; font-weight: 700; }
.ev-chip-n { font-size: .74rem; color: var(--ink-mute); background: #eef2f8; border-radius: 999px; padding: 0 7px; }
.ev-chip.on .ev-chip-n { color: #1a365d; background: #fff; }
.ev-chip-zero { opacity: .55; }
.ev-chip-zero .ev-chip-n { background: transparent; }
.ev-tag { font-size: .74rem; font-weight: 700; color: #fff; background: #4a5568; border-radius: 999px; padding: 2px 10px; }
.news-card.med .ev-tag { background: #2f855a; }
.news-card.phys .ev-tag { background: #2b6cb0; }
.news-card.chem .ev-tag { background: #6b46c1; }
.news-card.sport .ev-tag { background: #c05621; }
.news-card.astro .ev-tag { background: #4c51bf; }
.news-card.climate .ev-tag { background: #0f766e; }
.news-card.ai .ev-tag { background: #1a365d; }
.news-card.tw .ev-tag { background: #97266d; }
.news-head .speak-btn { margin-left: auto; }
.speak-btn { font: inherit; font-size: .84rem; font-weight: 700; color: #7b341e; background: #fffaf0;
  border: 1px solid #e2c08d; border-radius: 999px; padding: 6px 14px; cursor: pointer; white-space: nowrap; }
.speak-btn:hover { background: #fef3c7; }
.speak-btn:focus-visible { outline: 3px solid #2b6cb0; outline-offset: 2px; }
.ev-toggle { font-size: .86rem; }
.ev-more { margin: 6px 0 2px; }
.ev-body { margin: 10px 0 0; border-top: 1px dashed var(--line); padding-top: 10px; }
.ev-body .ev-block p { font-size: .95rem; line-height: 2; }
.ev-body .news-kws { margin: 10px 0; }
.ev-entry { margin-top: 12px; }
.ev-entry .btn { font-weight: 700; }
.news-mini-card .news-head .speak-btn { margin-left: auto; }
.news-mini-links { align-items: center; }

@media (max-width: 720px) {
  .ocw-events { grid-template-columns: 1fr; }
  .ev-grid { grid-template-columns: 1fr; }
}

/* ---------- 家教伴讀版入口 ---------- */
.tutor-entry{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin:14px 0 2px}
.tutor-entry .btn{font-size:15px}
.tutor-entry span{color:var(--ink-soft);font-size:13.5px}
.tutor-grid .card{text-decoration:none;color:inherit}

/* ---------- 今日複習 ---------- */
.daily-hub .daily-head{display:flex;align-items:baseline;justify-content:space-between;gap:10px;flex-wrap:wrap;margin-bottom:4px}
.daily-progress{font-size:13.5px;color:var(--ink-soft)}
.daily-card{border:1px solid var(--line);border-radius:14px;padding:14px 16px;margin-top:12px;background:rgba(0,0,0,.015)}
.daily-card + .daily-card{margin-top:10px}
.daily-card .ev-entry{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin-top:12px}
.btn.is-done{background:var(--ok,#3c9);border-color:var(--ok,#3c9);color:#fff;cursor:default}
.daily-finish{font-size:14.5px;line-height:1.9;margin-top:10px;padding:10px 14px;border-radius:12px;background:rgba(0,0,0,.03);border:1px dashed var(--line)}
@media (max-width:720px){.daily-card{padding:12px 12px}}